/*
    * Grapht, an open source dependency injector.
    * Copyright 2014-2015 various contributors (see CONTRIBUTORS.txt)
    * Copyright 2010-2014 Regents of the University of Minnesota
    *
    * This program is free software; you can redistribute it and/or modify
    * it under the terms of the GNU Lesser General Public License as
    * published by the Free Software Foundation; either version 2.1 of the
    * License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
   * details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc., 51
   * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   */
  package org.grouplens.grapht.reflect;
  
  import java.lang.annotation.Annotation;
  
  /**
   * MockDesire is a simple Desire implementation for use within certain types of
   * tests.
   * 
   * @author <a href="http://grouplens.org">GroupLens Research</a>
   */
  public class MockDesire implements Desire {
      private static final long serialVersionUID = 1L;
  
      private final Annotation qualifier;
      private final Satisfaction satisfaction;
      private final Class<?> desiredType;
      
      public MockDesire() {
          this(null);
      }
      
      public MockDesire(Satisfaction satisfaction) {
          this(satisfaction, null);
      }
      
      public MockDesire(Satisfaction satisfaction, Annotation qualifier) {
          this((satisfaction == null ? Void.class : satisfaction.getErasedType()),
               satisfaction, qualifier);
      }
      
      public MockDesire(Class<?> desiredType, Satisfaction satisfaction, Annotation qualifier) {
          this.desiredType = desiredType;
          this.satisfaction = satisfaction;
          this.qualifier = qualifier;
      }
      
      @Override
      public boolean isInstantiable() {
          return satisfaction != null;
      }
  
      @Override
      public Satisfaction getSatisfaction() {
          return satisfaction;
      }
  
      @Override
      public Class<?> getDesiredType() {
          return desiredType;
      }
  
      @Override
      public InjectionPoint getInjectionPoint() {
          return Desires.createInjectionPoint(qualifier, getDesiredType(), false);
      }
  
      @Override
      public Desire restrict(Class<?> type) {
          return new MockDesire(type, satisfaction, qualifier);
      }
  
      @Override
      public Desire restrict(Satisfaction satisfaction) {
          return new MockDesire(satisfaction.getErasedType(), satisfaction, qualifier);
      }
  
      @Override
      public String toString() {
          StringBuilder sb = new StringBuilder();
          sb.append("mock desire for ")
            .append(desiredType);
          if (qualifier != null) {
              sb.append(" with qualifier ")
                .append(qualifier);
          }
          if (satisfaction != null) {
              sb.append(" (satisfied by ")
                .append(satisfaction)
                .append(")");
          }
         return sb.toString();
     }
 }